Chris Waller will be spoilt for choice when he returns to Royal Ascot after Delectation's upset win in the Darley Classic.

Delectation came from last to beat odds-on favourite Chautauqua in a tight finish in the Group One sprint at Flemington on Saturday.

The leading trainer's plans for Delectation now involve finding another 1200m race up the straight, no matter the country.

Waller plans to return to Ascot in June, whether it is with Delectation or one of his stablemates.

"I want to take a horse again to Ascot. I had an amazing experience and I'd like to think that's what the international people think when they come to Flemington in Australia," Waller said.

"We'll go back with the best horse we can suited to that race whether it be Delectation, or Japonisme or any other horse in the stable, Press Statement.

"I'm not sure which one but we'll be taking one that's for sure."

The Waller-trained Brazen Beau finished second to Undrafted in the Diamond Jubilee Stakes at Royal Ascot in June.

The Darley takes Waller's Group One wins this seasons to nine including the Cox Plate with Winx, the trainer's first win in one of what are considered the three major races of the Melbourne spring.

"It's been pretty good," Waller said of his spring campaign.

"We haven't won every race on the carnival which is good, I think people get sick of that.

"We're just getting a little bit better every year."